Tool box add-on compartment



FIG. 1 is a top and left, front perspective view of a tool box add-on compartment showing my new design, the broken-line showing of a tool box is environmental only and forms no part of the claimed design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof, with the lid open;

FIG. 7 is a top plan view thereof, with the lid closed;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a top perspective view thereof;

FIG. 10 is a side elevational view showing the second embodiment of my new design of FIGS. 1-9;

FIG. 11 is a side elevational view thereof with the lid open;

FIG. 12 is a bottom plan view of the third embodiment of my new design of FIGS. 1-9. 

The ornamental design for a tool box add-on compartment, as shown and described. 